ISBN-13: 9781591202813 / Angielski / Miękka / 2010 / 88 str.
ISBN-13: 9781591202813 / Angielski / Miękka / 2010 / 88 str.
Offers the simplest, most practical approach to fitness, anywhere, anytime. A liter of water weights threee pounds; a gallon weights nine pounds, making water bottles, (plastic or stainless) the best possible resistance devices. All it takes is a water bottle for an efficient, affordable, and effective workout.